# DHT work — RESUME HERE

**Last updated:** 2026-06-16 · **Branch:** `agent-trust-wip` · **Worktree:** `~/Projects/archy-dht`

This file is the single source of truth for resuming the DHT / peer-distribution
work after a restart. Read it top to bottom, run the **Verify state** block, then
continue at **Next step**.

---

## ⚠️ CRITICAL — where to work (do not skip)

- **Work ONLY in the worktree `~/Projects/archy-dht` on branch `agent-trust-wip`.**
- **NEVER run git checkout / branch-switch / commit in the shared tree `~/Projects/archy`.**
  Another agent cuts releases on `main` there. Git branch state is **global to one
  working tree**, so a checkout in the shared tree drags every session onto that
  branch and can clobber uncommitted work. That already happened once — the worktree
  exists specifically to prevent it. See memory `feedback_concurrent_agent_tree`.
- The shared tree stays on `main` for the release agent. Leave it alone.

## Build facts (so you don't get surprised)

- It's a **binary** crate: test with `cargo test --bin archipelago -- <filter>`
  (there is no lib target).
- The **test profile is opt-level=3** → every incremental test rebuild of the
  `archipelago` crate is **~5 min**; a cold build of the iroh feature tree is ~19 min.
  Budget for it. Run builds in the background and poll.
- Default build = no iroh. The iroh swarm engine is behind the **`iroh-swarm`**
  Cargo feature (off by default): `cargo build --features iroh-swarm`.
- Plain `cargo build` (no feature) is the fleet build and is unaffected by any DHT work.

## Verify state (run these first on resume)

```bash
cd ~/Projects/archy-dht
git branch --show-current            # → agent-trust-wip
git log --oneline -7                 # see the commit list below
git status --short                   # should be clean (or your in-progress edits)
git worktree list                    # archy-dht → agent-trust-wip; archy → main
# sanity compile (default, fast-ish):
cargo build --bin archipelago 2>&1 | tail -3
```

---

## What is DONE (committed on `agent-trust-wip`)

Design doc: `docs/dht-distribution-design.md` (the full plan).

| Commit | Phase | Summary |
| --- | --- | --- |
| `0fef8086` | base | parked trust module + `seed::derive_release_root_ed25519` (pre-existing) |
| `27f11bf8` | **0** | signed-catalog authenticity wired: `trust/` module verifies the release-root detached signature in `app_catalog::fetch_one`; release-root KAT pinned |
| `f0cb91ed` | **1** | BLAKE3 alongside SHA-256: `content_hash.rs`, `ComponentUpdate.blake3`, `BlobMeta.blake3` |
| `2523c9e3` | **2 seam** | `swarm/mod.rs` — `BlobProvider` + `fetch_content_addressed` (verify peer bytes, origin-always-wins); `iroh-swarm` flag; wired into `update.rs` |
| `082946aa` | **2 engine** | real `swarm/iroh_provider.rs` over iroh 1.0 + iroh-blobs 0.103 (optional deps). Dep tree proven to resolve+compile against the pinned stack |
| `9fa56a82` | **3 core** | `swarm/seed_advert.rs` — signed Nostr seed-advertisement protocol (NIP-33 kind 30081, d-tag=blake3) |

All tests green at each step. Total new modules: `trust/`, `content_hash.rs`, `swarm/`.

## NEXT STEP — task #12 (Phase 3 glue + wiring)

Implement, in the worktree:

1. **`NostrSeedDiscovery`** (feature-gated, in `swarm/iroh_provider.rs` or a new
   `swarm/discovery.rs`): implement the `ProviderDiscovery` trait by querying relays
   with `seed_advert::advertisement_filter(hash)`, then
   `seed_advert::endpoint_ids_from_events(...)` → parse each string into
   `iroh::EndpointId` (`EndpointId::from_str` / parse). Skip ids that don't parse.
   - **NOTE:** `ProviderDiscovery::providers_for` is currently **sync**. The relay
     query is async → either change the trait to `#[async_trait] async fn`, or back
     it with an in-memory cache refreshed by a background subscription. Async trait
     is cleaner (the caller `try_fetch` is already async).
2. **Publish path:** when a node finishes downloading / already holds a public
   release/app-image blob, publish `seed_advert::advertisement_builder(blake3, my_endpoint_id)`
   signed with the node's Nostr key (`nostr_discovery.rs` has the
   `load_or_create_nostr_keys` + `Client` + `send_event_builder` patterns to reuse).
   Scope: **releases/catalog blobs only** — never private user blobs.
3. **Wire `swarm::providers()`** to construct an `IrohProvider` (with the
   `NostrSeedDiscovery`) from runtime config — needs an enable flag + relay list +
   data_dir. Likely make `providers()` async / build it once at startup and pass a
   handle into the update path. Until this is wired, `providers()` returns empty and
   everything uses origin (safe).

Then verify: `cargo build --features iroh-swarm` + `cargo test --bin archipelago -- swarm::`.

## After Phase 3

- **Phase 4** — IndeeHub films on the same blob layer (Blossom catalog + iroh swarm;
  MinIO origin). Each HLS `.ts` segment = a content-addressed blob.
- **Phase 0 GO-LIVE (needs the user)** — the catalog/manifest signature anchor
  `trust::anchor::RELEASE_ROOT_PUBKEY_HEX` is still `None`; the pinned KAT is the
  TEST mnemonic, not the real key. Going live = signing ceremony with the **real
  release master seed** (only the user has it) → derive release-root → bake its pubkey
  into `anchor.rs` → sign the real `releases/app-catalog.json`. Until then verification
  is advisory (verify-if-present, anchor not enforced).

## Mergeability

As of last check we were only ~4 commits diverged from `main`; the only shared-file
overlap is `seed.rs` + `update.rs`. **Do NOT merge to `main` while the release is in
flight** — that's the user's call. Sync (merge main → agent-trust-wip) once the
release lands and `main` is clean.

## Background build logs from the last session (may be stale)
`/tmp/dht-*.log` — phase test/build outputs. Safe to ignore/delete on resume.